Ruby: Remove some redundant overrides

Author: hvitved

ruby/ql/lib/codeql/ruby/dataflow/internal/DataFlowPrivate.qll

@@ -379,10 +379,6 @@ private module ParameterNodes {
         )
     }
 
-    override predicate isParameterOf(DataFlowCallable c, ParameterPosition pos) {
-      this.isSourceParameterOf(c.asCallable(), pos)
-    }
-
     override CfgScope getCfgScope() { result = parameter.getCallable() }
 
     override Location getLocationImpl() { result = parameter.getLocation() }
@@ -407,10 +403,6 @@ private module ParameterNodes {
       method = c and pos.isSelf()
     }
 
-    override predicate isParameterOf(DataFlowCallable c, ParameterPosition pos) {
-      this.isSourceParameterOf(c.asCallable(), pos)
-    }
-
     override CfgScope getCfgScope() { result = method }
 
     override Location getLocationImpl() { result = method.getLocation() }
@@ -437,10 +429,6 @@ private module ParameterNodes {
       c = method and pos.isBlock()
     }
 
-    override predicate isParameterOf(DataFlowCallable c, ParameterPosition pos) {
-      this.isSourceParameterOf(c.asCallable(), pos)
-    }
-
     override CfgScope getCfgScope() { result = method }
 
     override Location getLocationImpl() {